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Full vulnerability report · 2026
CVE-2026-42100High confidence

DoS in Sparx Pro Cloud Server

Sparx Systems · Pro Cloud Server

7.1HighCVSS 4.0
Recommended action
Within 7 days

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-30932

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
01

What, why and how

Improper Handling of Syntactically Invalid Structure in Sparx Pro Cloud Server allows Denial of Service (DoS) attack to be executed by sending an specially crafted SQL query. This causes the Pro Cloud Server service to terminate unexpectedly.  The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version 6.1 (build 167) and below were tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.

What

Improper Handling of Syntactically Invalid Structure in Sparx Pro Cloud Server allows Denial of Service (DoS) attack to be executed by sending an specially crafted SQL query. This causes the Pro Cloud Server service to terminate unexpectedly.  The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version 6.1 (build 167) and below were tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.

Why

The product does not handle or incorrectly handles input that is not syntactically well-formed with respect to the associated specification.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

What

Improper Handling of Syntactically Invalid Structure in Sparx Pro Cloud Server allows Denial of Service (DoS) attack to be executed by sending an specially crafted SQL query. This causes the Pro Cloud Server service to terminate unexpectedly.  The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version 6.1 (build 167) and below were tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.

Why

The product does not handle or incorrectly handles input that is not syntactically well-formed with respect to the associated specification.

How

An attacker operating through a network path may attempt exploitation with low privileges. If successful, the issue may disrupt the affected service.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path
a network path → Improper Handling of Syntactically Invalid Structure → disrupt the affected service
Attack surface
Network
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Not a CVSS 4.0 base metric
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-228 ↗

CWE-228: Improper Handling of Syntactically Invalid Structure. The product does not handle or incorrectly handles input that is not syntactically well-formed with respect to the associated specification.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Common Vulnerability Scoring System 4.0: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.ATNoneAttack requirements: No additional deployment or execution condition is required.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.VCNoneVulnerable-system confidentiality: No direct loss is represented by this metric.VINoneVulnerable-system integrity: No direct loss is represented by this metric.VAHighVulnerable-system availability: A successful attack can cause a major loss.SCNoneSubsequent-system confidentiality: No direct loss is represented by this metric.SINoneSubsequent-system integrity: No direct loss is represented by this metric.SANoneSubsequent-system availability: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkDenial of serviceCWE-228Public exploit reference
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

CERT Polska · Polish · CVE-2026-42096CERT Polska w social mediach

CERT Polska otrzymał zgłoszenie o podatnościach w oprogramowaniu Sparx Systems i koordynował proces ujawniania informacji. Podatność CVE-2026-42096 : Sparx Pro Cloud Server jest podatny na atak typu Broken Access Control w komunikacji z bazą danych. Z powodu braku weryfikacji uprawnień, każdy uwierzytelniony użytkownik może wykonywać dowolne zapytania SQL w kontekście użytkownika bazy danych. Podatność CVE-2026-42097 : Sparx Pro Cloud Server wymaga uwierzytelnienia na podstawie żądanego adresu URL. Atakujący może pominąć parametr model zapytania i przesłać nazwę modelu wyłącznie w binarnym ładunku żądania POST, co umożliwia wykonanie zapytań SQL bez uwierzytelnienia. Podatność CVE-2026-42098 : Sparx Enterprise Architect zawiera mechanizm bezpieczeństwa ograniczający działania użytkownika do tych przewidzianych dla przypisanej roli. Uwierzytelniony atakujący może jednak zmodyfikować zachowanie klienta oprogramowania (np. przy użyciu debuggera) i zalogować się jako dowolny inny użytkownik lub administrator, co umożliwia wprowadzanie dowolnych zmian w repozytorium. Podatność CVE-2026-42099 : W oprogramowaniu Sparx Pro Cloud Server występuje Race Condition w endpoincie /data_api/dl_internal_artifact.php . Aplikacja pobiera właściwości obiektu wskazanego przez parametr guid i zapisuje pobraną zawartość w bieżącej lokalizacji ( DIR ) pod określoną nazwą. Atakujący posiadający dostęp do repozytorium może kontrolować zarówno nazwę pliku, jak i jego zawartość, co umożliwia utworzenie złośliwego pliku PHP w bieżącym katalogu. Mimo, że plik jest usuwany po przetworzeniu, występuje Race Condition — w przypadku opóźnienia transmisji odpowiedzi (np. z powodu dużego pliku lub wolnego połączenia klienta) plik pozostaje dostępny. W tym oknie czasowym atakujący może wysłać drugie żądanie w celu wykonania złośliwego pliku PHP, co prowadzi do zdalnego wykonania kodu. Podatność CVE-2026-42100 : Nieprawidłowa obsługa niepoprawnych składniowo zapytań w Sparx Pro Cloud Server umożliwia przeprowadzenie ataku typu DoS poprzez wysłanie specjalnie spreparowanego zapytania SQL. Powoduje to nieoczekiwane zakończenie działania usługi Pro Cloud Server. Producent został powiadomiony z wyprzedzeniem o występowaniu podatności, jednak nie udzielił informacji na temat szczegółów podatności ani zakresu wersji podatnych na atak. Przetestowano i potwierdzono podatność jedynie w wersjach 6.1 (build 167) i poniżej oprogramowania Pro Cloud Server oraz w wersjach 17.1 i poniżej oprogramowania Enterprise Architect — inne wersje nie były testowane i również mogą być podatne.

Official advisory
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix not verified
Affected
≤ 6.1
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 19 May 2026 · Last source change 19 May 2026, 15:25 UTC · CWE-228 · Improper Handling of Syntactically Invalid Structure

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-30932
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2026-30932↗CVE authority or vendor reference↗Public exploit reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-42100 · cve.blacktree.nl